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Replace constant buffer with D3D12Buffer wrapper

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This commit is contained in:
ssdfasd
2026-03-15 18:59:28 +08:00
parent f25672c7d6
commit c62dc58157
3 changed files with 22 additions and 41 deletions
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57
tests/D3D12/main.cpp
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@@ -23,6 +23,7 @@
#include "XCEngine/RHI/D3D12/D3D12SwapChain.h"
#include "XCEngine/RHI/D3D12/D3D12RootSignature.h"
#include "XCEngine/RHI/D3D12/D3D12PipelineState.h"
#include "XCEngine/RHI/D3D12/D3D12Buffer.h"
#include "XCEngine/RHI/D3D12/D3D12Screenshot.h"
#include "XCEngine/Debug/Logger.h"
#include "XCEngine/Debug/ConsoleLogSink.h"
@@ -73,6 +74,10 @@ XCEngine::RHI::D3D12Shader gVertexShader;
XCEngine::RHI::D3D12Shader gGeometryShader;
XCEngine::RHI::D3D12Shader gPixelShader;
// Buffer objects
XCEngine::RHI::D3D12Buffer gConstantBuffer; // matrices
XCEngine::RHI::D3D12Buffer gMaterialBuffer; // material data
// 同步对象
XCEngine::RHI::D3D12Fence gFence;
UINT64 gFenceValue = 0;
@@ -293,43 +298,19 @@ ID3D12RootSignature* InitRootSignature() {
// 常量缓冲 (Constant Buffer) 创建与更新
// UPLOAD堆: CPU可写, GPU可读
//=================================================================================
ID3D12Resource* CreateConstantBufferObject(int inDataLen) {
D3D12_HEAP_PROPERTIES d3dHeapProperties = {};
d3dHeapProperties.Type = D3D12_HEAP_TYPE_UPLOAD;
D3D12_RESOURCE_DESC d3d12ResourceDesc = {};
d3d12ResourceDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
d3d12ResourceDesc.Alignment = 0;
d3d12ResourceDesc.Width = inDataLen;
d3d12ResourceDesc.Height = 1;
d3d12ResourceDesc.DepthOrArraySize = 1;
d3d12ResourceDesc.MipLevels = 1;
d3d12ResourceDesc.Format = DXGI_FORMAT_UNKNOWN;
d3d12ResourceDesc.SampleDesc.Count = 1;
d3d12ResourceDesc.SampleDesc.Quality = 0;
d3d12ResourceDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
d3d12ResourceDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
ID3D12Resource* bufferObject = nullptr;
gDevice.GetDevice()->CreateCommittedResource(
&d3dHeapProperties,
D3D12_HEAP_FLAG_NONE,
&d3d12ResourceDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
nullptr,
IID_PPV_ARGS(&bufferObject)
);
return bufferObject;
bool CreateConstantBufferObject(XCEngine::RHI::D3D12Buffer& buffer, int inDataLen) {
return buffer.Initialize(gDevice.GetDevice(), inDataLen, D3D12_RESOURCE_STATE_GENERIC_READ, D3D12_HEAP_TYPE_UPLOAD);
}
//=================================================================================
// 更新常量缓冲数据
//=================================================================================
void UpdateConstantBuffer(ID3D12Resource* inCB, void* inData, int inDataLen) {
D3D12_RANGE d3d12Range = { 0 };
unsigned char* pBuffer = nullptr;
inCB->Map(0, &d3d12Range, (void**)&pBuffer);
memcpy(pBuffer, inData, inDataLen);
inCB->Unmap(0, nullptr);
void UpdateConstantBuffer(XCEngine::RHI::D3D12Buffer& buffer, void* inData, int inDataLen) {
D3D12_RANGE d3d12Range = { 0 };
unsigned char* pBuffer = nullptr;
buffer.GetResource()->Map(0, &d3d12Range, (void**)&pBuffer);
memcpy(pBuffer, inData, inDataLen);
buffer.GetResource()->Unmap(0, nullptr);
}
//=================================================================================
@@ -833,7 +814,7 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
gPixelShader.CompileFromFile(L"Res/Shader/gs.hlsl", "MainPS", "ps_5_1");
ID3D12PipelineState* pso = CreatePSO(rootSignature, gVertexShader.GetBytecode(), gPixelShader.GetBytecode(), gGeometryShader.GetBytecode());
ID3D12Resource* cb = CreateConstantBufferObject(65536);
CreateConstantBufferObject(gConstantBuffer, 65536);
DirectX::XMMATRIX projectionMatrix = DirectX::XMMatrixPerspectiveFovLH(
(45.0f * 3.141592f) / 180.0f, 1280.0f / 720.0f, 0.1f, 1000.0f);
DirectX::XMMATRIX viewMatrix = DirectX::XMMatrixIdentity();
@@ -854,9 +835,9 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
DirectX::XMStoreFloat4x4(&tempMatrix, modelMatrix);
memcpy(matrices + 48, &tempMatrix, sizeof(float) * 16);
}
UpdateConstantBuffer(cb, matrices, sizeof(float) * 64);
UpdateConstantBuffer(gConstantBuffer, matrices, sizeof(float) * 64);
ID3D12Resource* sb = CreateConstantBufferObject(65536);
CreateConstantBufferObject(gMaterialBuffer, 65536);
struct MaterialData {
float r;
};
@@ -864,7 +845,7 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
for (int i = 0; i < 3000; i++) {
materialDatas[i].r = srandom() * 0.1f + 0.1f;
}
UpdateConstantBuffer(sb, materialDatas, sizeof(MaterialData) * 3000);
UpdateConstantBuffer(gMaterialBuffer, materialDatas, sizeof(MaterialData) * 3000);
int imageWidth, imageHeight, imageChannel;
stbi_uc* pixels = stbi_load("Res/Image/earth_d.jpg", &imageWidth, &imageHeight, &imageChannel, 4);
@@ -923,10 +904,10 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
gCommandList.SetPipelineState(pso);
gCommandList.SetRootSignature(rootSignature);
gCommandList.SetDescriptorHeaps(_countof(descriptorHeaps), descriptorHeaps);
gCommandList.SetGraphicsRootConstantBufferView(0, cb->GetGPUVirtualAddress());
gCommandList.SetGraphicsRootConstantBufferView(0, gConstantBuffer.GetGPUVirtualAddress());
gCommandList.SetGraphicsRoot32BitConstants(1, 4, color, 0);
gCommandList.SetGraphicsRootDescriptorTable(2, srvHeap.GetGPUDescriptorHandleForHeapStart());
gCommandList.SetGraphicsRootShaderResourceView(3, sb->GetGPUVirtualAddress());
gCommandList.SetGraphicsRootShaderResourceView(3, gMaterialBuffer.GetGPUVirtualAddress());
gCommandList.SetPrimitiveTopology(XCEngine::RHI::PrimitiveTopology::TriangleList);
staticMeshComponent.Render(gCommandList.GetCommandList());